Apparatus for reheating exhaust-steam and heating air



(No Model.)

. L. HUSSEY.

APEARATUS FOB. REHEATING EXHAUST STEAM AND HEATING AIR. No. 276,588.

Patented May 1, 1883.

I7INVENTOR ATTORNEfl U ITED STATES 1 PATENT OFFICE.

LEVI HUSSEY, OF NEW YORK,'N. Y.,IASSIGNOR OF ONE-HALF T0 GEORGE I w. DONALDSON, OF CRANFORD, NEW JERSEY.

APPARATUS FOR REHEATI NG EXHAUSTFSTEAM AND HEATING AIR.

SPECIFICATION forming part of Letters Patent No. 276,588, dated May 1, 1883. Application filed August 19, 1882. (No model.)

To all whom it may concern Beit known that I, LEVI HUssEY, of the city, county, and State of New York, have invented certain new and useful Improvements in Apparatus for Reheating Exhaust-Steam and Heating Air, of which the following is a specification.

This invention has reference to an improved apparatus for reheating exhaust-steam and utilizing the same for heating drying-rooms, feed-water apparatus, and other purposes, and also for using the same apparatus at night, when the steam-engine is not at work, for heating airand conducting the same tothe different parts of the building. i

The invention consists of a system of pipes arranged in an extension-flue above the due for conducting the products of combustion to the chimney, said system of pipes being connected with the valved exhaust-pipe of the steam-engine and by a valved conducting-pipe.

to radiators, feed-water heaters, or other apparatus. The system of heating-pipes is also provided with vvalved air inlet and outlet pipes, which supply heated atmospheric air to the building when the steam-engine is stopped for the night.

the furnace 0 along the bottom and sides of the boiler, then forward through the lines of the same, and then above the boiler, in the usual manner, to the chimney, as shown by the arrows in Fig. 1. The draft-flue D above the boiler is extended in upward direction, so as to be large enough to form an e z'tension-flue, D, Within which a system of heating-pipes, E, is arranged. This system of pipes E is sup ported by the headers E and by an intermediate transverse hanger or bracket plate, E

supported by the brick-work of the boiler-flue... The exhaust-pipe]? of the steam-engine is connected with the header E at one end of the system of pipes E, so that the exhaust-steam- 5 from the same passes through the several tiers of inclined pipes to the header Eat the other end of the system, and thence by a connectingpipe, F, tothe radiators, feed-water heater, or other apparatus, by which means the reheated 6o steam maybe utilized. The exhaust-pipe F is provided with a stop-cock, f, which, when opened, admits the exhaust -steam to pass through the system of heating-pipes 'E. In

the passage through the pipes E the exhauststeam is heated up to a considerably higher temperature by utilizing the radiated heat of the products of combustion which pass through the flue D to the chimney, said reheated exhaust-steam being then used for heating up drying-rooms and other spaces Without any additional cost. The steamconducting pipe F is provided with a pressure-regulatin g valve, F and with a pipe, F leading to the outside, so as to regulate the proper pressure in the heating-pipes within the building and automatically permit the escape of steam of higher pressure.

As the system described is only capable for use as long as the steam-engine is kept running, which generally is only during the working-hours of the day, it is also necessary to provide means by which a certain amount of heat can be supplied to the different rooms of the building during the night, when the engine is not running. For this purpose avalved air-pipe, G, is arranged, which, like the regulating-pipe F passes outside of the furnacewalls B. This air-pipe is connected with the lower part of the header E at one end of the system of heating-pipes E, so that the airis drawn in, heated up in the pipes E in its pas sage through the same, and then conducted by'the pipe G and suitable registers to the different parts of the building. The valvef'gg of the exhaust-pipe has to be closed when the steam-engine is stopped for the night. Owing to the heat radiated by the banked fires of the boiler and the walls of the furnace and extension-flue, the system of heating-pipes is kept me at a sufficiently high degree of temperature to draw in atmospheric air and heat it in the pipes E, furnishing thereby a continuous supply of heated air to the interior of the building. In this manner a building may be heated during the day by means of the reheated exhauststeam from the engine to which a high temperature is imparted from the heat of the products of combustion on their way from the boiler-furnace to the chimney, and at night to a less degree by the hot air drawn through the system of heating-pipes, which, however, is sufficiently heated to prevent the rooms in the building from assuming too low a temperature.

The air being thus kept warm -through the flue, D, a coil of heating-pipes, E, having headers E, the coil and headers being located in the extension-flue, a valved exhaust-pipe, F, leading from the engine to one header E, a steam-conducting pipe, F, connected to the 2 '27c.5es

opposite header E, provided with a pressure relief-valve, F and a pipe, F substantially as set forth.

2. The combination of a steam-boiler furnace, O, a draftfiue, D, having an extensionflue, D, above the same, a coil of heatingpipes, E, having headers E, arranged with the coil in the extension-flue, a valved air-induction pipe, G, connected to the lower part of one header E, and a valved air-eduction pipe, G, connected to the upper part of the opposite header E, substantially as set forth.

3. The combination of a draft-flue, D, of a steam-boiler furnace, an extensionflue, D, above the same, a system of heating-pipes, E, within the extension-flue, a valved exhaustpipe, F, connected to one end of the heatingpipes, a steam-conducting pipe, F, having pipe F and regulating-valve F connected to the opposite end of the system of heatingpipes, and valved air induction and eduction pipes G G, connected to opposite ends of the system of heating-pipes, substantially as specified.

my invention I have signed my namein presence of two subscribing witnesses.

LEVI HUSSEY.

Witnesses:

PAUL GoEPEL, SIDNEY MANN.

In testimony that I claim the foregoing as 

